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Finding the Fourth Proportional to 217,734.70, 326,602.07 and 67,987.82

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Solution

The fourth proportional to 217,734.70, 326,602.07 and 67,987.82 is: 101,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,734.70 : 326,602.07 = 67,987.82 : x
  2. Step 2: Convert to fraction form
    217,734.70/326,602.07 = 67,987.82/x
  3. Step 3: Cross multiply
    217,734.70x = 326,602.07 × 67,987.82
  4. Step 4: Simplify right side
    217,734.70x = 22,204,962,746.79
  5. Step 5: Solve for x
    x = 22,204,962,746.79/217,734.70
  6. Step 6: Final answer
    x = 101,981.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.